Don't want to step on any toes here, but I would have to disagree almost completely, at least in the ideology that subconscious activities have no bearing on us. All things sensory are subconscious functions; seeing, feeling, smell, taste, hearing, breathing, etc. It is not as if I make the conscious decision to see or to hear, it is a natural working of the subconscious that reflects such things.
Even as it relates to body language, verbal intonations, and things of the like. We don't make the subtle cues consciously, nor are their interpretations registered at the conscious level (unless they are blatant and utterly obvious). One of the basic principles of LoA and Quantum Mechanics is the simple fact that thoughts carry energy. Period.
Our subconscious mind works at a much faster rate than our conscious mind. Just look at dreams. I am an incredibly lucid dreamer, and once in a state of realization I am dreaming I can consciously control my movements. However, previous to my fully aware consciousness, I am already in a setting that was developed by my subconscious which is important to recognize too. Even when I am aware of dreaming, I sometimes just let it play out on its own and just watch.
This subject regards heavily to past experience and repressed memories. Those are locked away subconsciously too. I just don't see how you can validate the idea that the subconscious plays no role in manifestation, that is, until you can prove that subconscious thought carries no energy, in which case LoA and some parts of Quantum Mechanics and Physics would be totally without merit.